Serial.println not working

hello everyone , i have a question about the Serial.println function :

is there a chance that sometimes my arduino uno just dismiss my Serial.println calls?
I don't assume it's issue of space in the RAM but it seems that the code in arbitrary places decides to not print anything to the monitor.

i ask your help for this matter.
with best regards.
Dror

If only we knew what sketch you are running ...

... and what IDE version.

I'd say extremely unlikely. 99.99%, the problem lies in your [unshared] code.

I see that your code is secret so here is my secret answer, you are missing "()" on line?. Post the code following the forum guidelines, without that this is about the best answer you will get.

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